Hand clamp



May 22, 1928. v

, T. R. LAWRENCE HAND CLAMP Filed May 2, 1927 Patented May 22, 1928 'ATN' THEOPHILUS B. LAWRENCE, OF OAKLAND, CALIFORNIA.

HAND CLAMP.

Application filed May 2,

The invention aims to provide a new and improved-hand clamp for holding or turning cylindrical objects, and as an example, it may be considered that the device is for the purpose of holding fruit jars, while removing caps therefrom, it being understoodhowever that the device is by no means restricted to this particular field of use.

With the foregoing in View, the invention resides in the novel subject matter hereinafter described and claimed, the description being supplemented by the accompanying drawing.

Fig. 1 is a side elevation partly broken away and in sect-ion.

Fig. 2 is an edge view.

Fig. 3 is.a fragmentary perspective view.

The preferred form of construction is herein illustrated and while such construction will be specifically described, it is to be understood that within the scope of the invention as claimed, variations may be made.

The numeral 1 denotes a flexible metal band to extend around'an object to be gripped.

Extending along the outer side of this band and of any desired length, is a chain 5 p whose links embody transverse reaches 6 and hooks 7, the books of each link being engaged with the transverse reach 6 of the next adjacent link. At one end, this chain may be held in an eye 8 on one end of a small plate 9 secured byrivets 10 or other desired means, to the band 4. A special U- shaped link 11 is preferably employed for the other end of the chain, the arms of this link being provided with hooks 12 received in notches 13 in one end of the band4. The

other end of this band is pivoted at 13 to one end of a hand lever 14. This hand lever crosses another hand lever15 and the two are fulcrumed together at the crossing point, as denoted at 16. Lever 15 is provided at its front end with a hook 17 which may be engaged with any of the transverse members,

6 of the chain links. When the hook is disengaged from the chain, the band 4 may be readily positioned around an object of one size or another. Then, with the rear por tions of the levers 1tl5 separated, the hook may be engaged with the chain 5. It will thus be seen that by gripping the rear ends of the levers and moving them together, the band will be tightly contracted around the object, so that the latter may be heldeither 1927,. Serial no. 188,360.

nel-shaped sheet metal stamping 18 receives the jawv of the lever 14L and is secured to it 15 are preferably proby a-rivet 19, and the side flanges of this channel-shaped staniping are extended forwardly beyond the body portion of the latter toprovide a pair of arms 20, which arms diverge forwardly and are pivoted at 13 to the band 4:. The' pivot ispreferably in theform of a rivet and the band is preferably provided at one end with aneye 21 which receives said rivet, said eye being formed by bending this end of the bandupon itself. Thechain-carrying end of the band 4, passes slidably between the arms 20 and if necessary when applying the tool to the object to beheld or turned, said band end may be entirely withdrawn from the space between said arms.

The hook 17, in the present disclosure, is formed by bending one end of a sheet metal late 22, said plate being secured by rivets 23 to the jaw of the lever 15.

By providing the novel construction shown and described, a device is producedwhich may. be easily and inexpensively manufactured, yet it will be eflicient and in every way desirable. As above stated, the detailsherein disclosed are preferably followed, but it is to be understood that numerous variations may be made within the scope of the invention as claimed.

1' claim: I

1. A hand clamp comprising a flexible strap to extend around an object, a hand lever pivoted at its front end to one end of said strap, a chain secured against the outer side of said strap and extending to the other end of the latter, a second hand lever fulcrumed to the first namedlever,'and a hook on the front end of said second hand lever,

said hook being engageable with links of said chain.

2. A hand clamp comprising a flexible strap to' extend around an object, a hand lever pivoted at its front end to one end of said strap, the other end of said strap being formed with openings, a chain at the outer side of said strap, one end of said chain having hooks passed through said openings,

means securing the other end of said'chain to the strap, a second hand lever fulcrumed to the first named lever, and a hook carried by said second hand lever for engagement with said chain.

3. A hand clamp comprising a' flexible band to surround an object, the ends of said band being disposed in overlapping relation, a hand lever having a pair of spaced arms at its front end which straddle the outer end of said band and are pivoted to th inner end of said band, a second hand lever fulcrumed to the first named lever, and co-operating connecting elements on the band and the front end of said second lever, the connecting elements of said band being spaced apart circumferentially oi the latter.

4. A hand clamp comprising a flexible bandto surround an object, the ends of said band being disposed in overlapping relation, a pair of pliers spaced outwardly from said band and disposed substantially radially thereof, a channel-shaped member straddling and secured to onejaw of said pliers, the side flanges of said channel-shaped memher being forwardly extended from said jaw to provide arms which straddle the outer end of said band and are pivoted to the inner end thereof, a plate secured to the other jaw of the pliers, and co-operable connecting elements on said plate and band, the connecting elements of the band being spaced apart circumferentially of the latter.

5. A hand clamp comprising a flexible band to surround an object, the ends of said band being disposed in overlapped relation, a chain secured to said band and disposed at the outer side of its outer end, a pair of pliers spaced outwardly from said band and disposed substantially radially thereof, a channel-shaped member straddling and secured to one jaw of said pliers, the side flanges of said member being forwardly extended from said jaw to provide arms which straddle said chain and said outer end of said band and are pivoted to the inner end of said band, a plate secured to the other jaw of the pliers, and a hook on said plate for engagement with the links of said chain.

In testimony whereof I have hereunto afiixed my signature.

THEOPHILUS LA'WRENCE. 

